Jay OS
The operating system for modern legal practice.
Jay OS builds the technology driving AI-native legal practice, so attorneys can focus on the counsel only they can give. We’re starting with trusts and estates, and we won’t stop there.
What we’re building
One operating system, working alongside attorneys
Legal practice is changing fast. We’re building for where it’s headed, so attorneys spend their time on counsel and exceptional legal help reaches more people.
01
Technology built for modern legal practice
An AI-native platform that takes on the work behind the scenes, so far more of an attorney’s time goes to clients.
02
An AI-native operating team
Engineers and operators who work side by side with attorneys, continuously improving how clients are served.
03
An engine for growth
We help build and grow the client base, so attorneys can focus on practicing, not prospecting.
Work with Jay
Build the future of legal practice with us
Attorneys interested in partnering
Run your own practice? Learn how Jay OS can work alongside you.
Get in touch to learn more →
Attorneys interested in joining an AI-native law firm
Jay Law, P.C. is the independent law firm built on Jay OS. Attorney roles are posted there.
See Jay Law, P.C. open roles →
Engineers and operators
Help build the operating system for legal practice, side by side with the attorneys who use it.
See Jay OS open roles →
How we work
The principles we operate on
Attorneys are at the heart of the work.
We build tools that augment great lawyers, not replace them, side by side with the attorneys who use them.
Technology has to earn its place.
We use AI only where it lowers the cost of excellent work or produces a better result than people alone.
We build around clients, not matters.
Our platform follows the client relationship over time, so attorneys see the whole picture and clients feel the continuity.
We build what others won’t.
Not another legal AI tool: an operating system focused on quality, client experience, and trust.
Why now
Why we started Jay
The way legal services are organized, priced, and delivered hasn’t changed in decades. Technology, capital, and regulation are finally making a new model possible.
01 · Technology
AI can now handle the operational work.
Intake, drafting, review, scheduling, and billing no longer need to consume an attorney’s week.
02 · Capital
Investment is missing individual practice.
Most new capital targets large enterprises. Almost no one is building for households and small businesses.
03 · Regulation
The structure of modern firms is evolving.
States are taking different paths, which favors teams fluent in both law and technology.
Team
Who we are
Bob Borek
Founder
Previously COO and President at Datavant, where he scaled the company from early stage to more than $7B in value. Before that, Wachtell, Lipton, Rosen & Katz, Stanford Symbolic Systems, and Yale Law.
Victor Cai
Founding Engineer
Previously Founding Engineer at Arbital Health and Datavant. Studied Math and Economics at Cornell.
James O’Brien
Founding Engineer
Previously Senior Engineer at Datavant and Google. Studied Mathematics and Computer Science at Cambridge.
We’re still building our founding team
Build the core of Jay OS alongside our founding engineering team, collaborating with Jay Law, P.C.’s founding attorney and earliest clients, so exceptional counsel reaches more people.
Backed by Shaper Capital
Shaper is building the next generation of category-defining companies. Travis May, co-founder of LiveRamp and Fractional AI and founder of Datavant and Shaper Capital, is an investor and ongoing advisor.
Looking for legal help?
Jay OS provides technology and services to Jay Law, P.C., an independent law firm.
Jay OS
The technology and team behind modern legal practice.
Jay OS, Inc. provides technology and services to Jay Law, P.C., an independent law firm. Jay OS does not provide legal services. Looking for legal help? Visit jaylaw.co.
© 2026 Jay OS, Inc.